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Making the Brazilian ATR-72 Spin
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Note: This story was corrected on August 10th at 10:23 am, thanks to the help of a sharp-eyed reader.
Making an ATR-72 Spin
I wasn’t in Brazil on Friday afternoon, but I saw the post on Twitter or X (or whatever you call it) showing a Brazil ATR-72, Voepass Airlines flight 2283, rotating in a spin as it plunged to the ground near Sao Paulo from its 17,000-foot cruising altitude. All 61 people aboard perished in the ensuing crash and fire. A timeline from FlightRadar 24 indicates that the fall only lasted about a minute, so the aircraft was clearly out of control. Industry research shows Loss of Control in Flight (LOCI) continues to be responsible for more fatalities worldwide than any other kind of aircraft accident.
The big question is why the crew lost control of this airplane. The ADS-B data from FlightRadar 24 does offer a couple of possible clues. The ATR’s speed declined during the descent rather than increased, which means the aircraft’s wing was probably stalled. The ATR’s airfoil had exceeded its critical angle of attack and lacked sufficient lift to remain airborne. Add to this the rotation observed, and the only answer is a spin.
Can a Large Airplane Spin?
The simple answer is yes. If you induce rotation to almost any aircraft while the wing is stalled, it can spin, even an aircraft as large as the ATR-72. By the way, the largest of the ATR models, the 600, weighs nearly 51,000 pounds.
Of course, investigators will ask why the ATR’s wing was stalled. It could have been related to a failed engine or ice on the wings or tailplane. (more…)
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How the FAA Let Remote Tower Technology Slip Right Through Its Fingers
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In June 2023, the FAA published a 167-page document outlining the agency’s desire to replace dozens of 40-year-old airport control towers with new environmentally friendly brick-and-mortar structures. These towers are, of course, where hundreds of air traffic controllers ply their trade … ensuring the aircraft within their local airspace are safely separated from each other during landing and takeoff.
The FAA’s report was part of President Biden’s Infrastructure Investment and Jobs Act enacted on November 15, 2021. That bill set aside a whopping $25 billion spread across five years to cover the cost of replacing those aging towers. The agency said it considered a number of alternatives about how to spend that $5 billion each year, rather than on brick and mortar buildings.
One alternative addressed only briefly before rejecting it was a relatively new concept called a Remote Tower, originally created by Saab in Europe in partnership with the Virginia-based VSATSLab Inc. The European technology giant has been successfully running Remote Towers in place of the traditional buildings in Europe for almost 10 years. One of Saab’s more well-known Remote Tower sites is at London City Airport. London also plans to create a virtual backup ATC facility at London Heathrow, the busiest airport in Europe.
A remote tower and its associated technology replace the traditional 60-70 foot glass domed control tower building you might see at your local airport, but it doesn’t eliminate any human air traffic controllers or their roles in keeping aircraft separated.
Inside a Remote Tower Operation
In place of a normal control tower building, the airport erects a small steel tower or even an 8-inch diameter pole perhaps 20-40 feet high, similar to a radio or cell phone tower. Dozens of high-definition cameras are attached to the new Remote Tower’s structure, each aimed at an arrival or departure path, as well as various ramps around the airport.
Using HD cameras, controllers can zoom in on any given point within the camera’s range, say an aircraft on final approach. The only way to accomplish that in a control tower today is if the controller picks up a pair of binoculars. The HD cameras also offer infrared capabilities to allow for better-than-human visuals, especially during bad weather or at night.
The next step in constructing a remote tower is locating the control room where the video feeds will terminate. Instead of the round glass room perched atop a standard control tower, imagine a semi-circular room located at ground level. Inside that room, the walls are lined with 14, 55-inch high-definition video screens hung next to each other with the wider portion of the screen running top to bottom.
After connecting the video feeds, the compression technology manages to consolidate 360 degrees of viewing area into a 220-degree spread across the video screens. That creates essentially the same view of the entire airport that a controller would normally see out the windows of the tower cab without the need to move their head more than 220 degrees. Another Remote Tower benefit is that each aircraft within visual range can be tagged with that aircraft’s tail number, just as it might if the controller were looking at a radar screen. (more…)
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The Surprising Death of DUATS
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Reading that the FAA will end its contract for the Direct User Access Terminal Service (DUATS) on May 16, 2018, caught me by surprise. The surprise was not that the FAA was not renewing its support of the service. The surprise was that it had already done so around the turn of the century. Clearly, I need learn to pay closer attention to such things.
DUATS was born in 1989, about the time Flight Training magazine arrived in the world, back when computers were the new and exciting frontier that ended landline calls to 1-800-WxBrief and waiting on hold for a briefer. There were two different contractors competing for the attention of pilots, and their advertising revenue was certainly welcomed by the new publication.
More exciting was the no-wait weather briefing and other services DUATS provided—at no charge! And with time, each iteration of the provider’s proprietary software that automatically downloaded the selected weather products expanded the menu of meteorological goodies on offer. To this day, when I hear the nostalgic sound of a dial-up modem making its connection, I think not of “You’ve got mail!” but “You’ve got flying weather!”
But as broadband and Wi-Fi supplanted dial up, Internet weather sources were easier to access, and there were so many to choose from! As my attention was diverted (distracted?) elsewhere, as often happens, what you don’t regularly see ceases to exist. And isn’t the same thing happening to websites that haven’t kept up and redesigned their sites to automatically format themselves to the device that displays them?
What is more heartwarming is that it seems what goes around comes around. Without digging too deeply in to a service comparison, it seems that the flight service (smart phone compatible) website—www.1800WxBrief.com—provides most, if not all of a pilot’s flight planning needs, and for free! Ultimately, technological progress seems to be a merry go round, but getting a good preflight briefing has never lost its important contribution to aviation safety. — Scott Spangler, Editor
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Pilot Past Tense
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Asking newly met people their occupations is a phatic conversation starter that leads me down the semantic rabbit hole. Upon learning that I’m a word merchant, they ask what I write about. After hearing “aviation,” they ask if I’m a pilot, which is usually followed by “What do you fly?”
And so it starts.
Yes, I earned my private pilot certificate in 1976 and my instrument rating and commercial certificate in the 1990s. Because those certificates will never expire, I proudly acknowledge to the title of pilot, as a noun: “a person qualified to operate the control of an aircraft or spacecraft” (I wish!).
But “pilot” is also a transitive verb: “to act as a pilot of, on, in, or over” some craft. To pilot an aircraft in the present tense requires a valid medical certification (in a form applicable to the certificates and ratings held), a current flight review, and the documentation of compliance with the applicable currency requirements.
In this regard, I’m a pilot in the past tense. As far as I know right now, I possess no intellectual or physical disqualification that would prevent me from becoming a pilot in the future tense. And there are times, especially on nice spring and summer days, when I consider investing in piloting in the present tense. And then I get another notice that seems to be counting down the months until I must enroll in Medicare.
But what is life but a series of difficult decisions? One day every pilot will realize he or she has reached the point of no return and will have to make a decision that will define the narrative that is the remainder of their lives. And like writing a story, there is no one right or wrong way, but each path is lined with consequences directly related to it. Only time will tell if there’s another logbook entry along the path I’ve chosen.
A tangent on this debate of pilot tenses is one of aeronautical identity: is a pilot in the past tense still a pilot noun? Depending on my mood, I’ve taken both sides. I recommend that you not conduct this mental effort while tensely stretched out in the dentist’s recliner. It never ends well.
If you’re facing a similar cognitive conversation and you’re just not in the mood to deal with our pilot tense at the moment, may I recommend distraction. This always works for me: If a pilot in the present tense is airborne and the sole manipulator of the controls when time springs forward or falls back, how does he or she log it? — Scott Spangler, Editor
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Learning to Fly and the Convenience Culture
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“Convenience,” wrote Tim Wu in The Tyranny of Convenience, “more efficient and easier ways of doing personal tasks—has emerged as perhaps the most powerful force shaping our individual lives and our economies.” From a passenger’s perspective, aviation is all about convenience, especially when compared to long distance journeys on foot or by school bus. But learning to fly, becoming a pilot, is anything but convenient.
As Wu suggested, this is not necessarily a bad thing, but it gives new context to an individual’s aspiration of pilothood.
Those who have seen their training through to certification know that learning to fly is inconvenient. It demands a serious commitment and investment of time and money. To attract more newcomers, many in aviation have endeavored to make the process less arduous.
When it comes to manned flight, this is probably a self-defeating effort. “Convenience,” wrote Wu, “has the ability to make other options unthinkable.” Nothing a flight school does will equal another more convenient aviation experience that is now enjoying robust growth: drones.
Yes, I can now hear you thinking, but flying an airplane and flying a drone are not equal. And I would not argue with you. But which pursuit is more convenient? A good preflight inspection often last longer than a drone’s battery, but that seems a perfect match for today’s average attention span.
Before you answer this, consider all of the conveniences you have accumulated over the years and decades to make your life “easier” and “more fulfilled.” And be honest, like Wu: “Convenience seems to make our decisions for us, trumping what we like to imagine are our true preferences. (I prefer to brew my own coffee, but Starbucks instant is so convenient I hardly ever do what I “prefer.”) Easy is better, easiest is best.”
But there is a dark side to convenience, Wu writes. “With its promise of smoother, effortless efficiency, it threatens to erase the sorts of struggles and challenges that help give meaning to life. Created to free us, it become a constraint on what we are willing to do, and thus in a subtle way enslave us.”
Pursuing inconvenience at every turn to give life meaning would just be silly. Washing clothes by beating them on a rock down by the river would be more meaning than any one life would deserve, especially during a Wisconsin winter.
Our culture of convenience “fails to acknowledge that difficulty is a constitutive feature of human experience,” Wu said. “Convenience is all destination and no journey.” For those looking for a rewarding journey that guarantees the struggles and challenges that give meaning to life, learning to fly is perfect.
Accepting this might be an effective marketing challenge for those seeking aviation newcomers. Make that newcomers who want to fly for fun. Those seeking a flying career are driven by other motivations. Perhaps our predecessors, who described flying for fun in post-World War II America as a hobby, were onto something.
“Embracing inconvenience may sound odd, but we already do it without thinking of it as such,” Wu said. “As if to mask the issue, we give other names to our inconvenient choices” We call them hobbies, avocations, callings, passions.” Perhaps you yourself have used one of these words to explain why you fly.
Investing the time and money in learning to fly is rarely discussed with newcomers beyond the transportive convenience it provides once achieved. Wu wasn’t talking about flying, but he could have been. “Such activities take time, but they also give us time back. They expose us to the risk of frustration and failure, but they also can teach us something about the world and our place in it.”
Or above it. Rather than promoting the future convenience of learning to fly, why not focus on “the joy of doing something slow and something difficult, the satisfaction of not doing what is easiest.”
Couch this outreaching challenge in a way that will tickle the interest of people who want to stand apart, to be noticed (and that includes just about everyone in the realm of selfie social media). Learning to fly is, perhaps, the north star in “the constellation of inconvenient choices [that] may be all that stands between us and a life of total, efficient conformity.”
It is certainly worth considering because those who fly for fun, for recreation, are the the economic foundation of general aviation, just as the middle class is for the American economy. Adapting the marketing messages to keep pace with the cultural changes and interests is essential for its survival, and one message does not interest all comers. — Scott Spangler, Editor